3rdparty: Adjust use of Everest in ecp_supported_curves
diff --git a/library/ecp.c b/library/ecp.c
index 8ee517e..c281d84 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -410,12 +410,9 @@
#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
{ MBEDTLS_ECP_DP_SECP192K1, 18, 192, "secp192k1" },
#endif
-#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
+#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED) && defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
{ MBEDTLS_ECP_DP_CURVE25519, 29, 256, "x25519" },
#endif
-#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
- { MBEDTLS_ECP_DP_CURVE448, 30, 448, "x448" },
-#endif
{ MBEDTLS_ECP_DP_NONE, 0, 0, NULL },
};